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Straightening Shafting.

Patented Dec 4, 1866.

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SPECIFICATION.

TO ALL WHOM 1T MAY CONCERNE Be it known that I, ROBERT fSAFELY, ofCohoes, Albany county, State of New York, have invented a new and usefulMachine for Straightening Metal Shafting; and I do hereby declarethatthefollowing is a full, clear, 3 and exact description thereof, referencebeing had to the accompanying drawings, making a part of this speciiif,`cation, in whichi A Figure 1 is a plan view of the straighteningmachine. Figure 2 is a longitudinal section taken vertically through thecentre of fig. 1. Figure 3 isl a similar section showing the parts inposition for receiving a shaftor rod to be straightened. y i Similarletters of reference indicate corresponding parts in the severalfigures. In the manufacture of iron shafts, the usual practice has beento leave them, while hot, upon the ground` thus rendering them liable tobecome crooked more orl less, so that they require to be straightenedbefore they; can be used, an operation which has been very laborious andcostly. The object of my invention is to obtain a. machine by whichshafts of various diameters can be readily straightened, while in aheated state,` so as to` remain permanently true, as will be hereinafterdescribe I. l

To enable others skilled in thart to understand my invention, I willdescribe its construction and operation. f In the accompanying drawings,A represents the rectangular bed-plate, upon `whichthe shafts or rodsare rolled and straightened. This bed-plate may be .made of any requiredlength and width, and its upper surface should be planed true andsupported in a horizontal plane. At the ends of said bed-plate, A, areerected, per-` I pendicularly to its surface, two standards, which havelong arms B B', extending out horizontally from them, and in planesparallel with them, as shown in figs. land 2. The rear ends of the armsof the standards, B 13,1 serve as supports and bearings for a transversecrankeshaft, C, haring two bell-cranks aa formed on it at equaldistances from the arms B. Y The shaft C may be rotated in anyconvenient manner, and its cranks a a, l are connected, by means ofpitman rods, b b, to a horizontal'reciprocating plate, D, the bottomsurface of which should be in a plane parallel to the top surface of thebed-plate, A, as shown in gs. 2 and 3. The endsof the, i top plate, D,are supported and guided by means of two longitudinal guides, E E, whichare so applied to the 1 inside surfaces of the standards, that they canboth be adjusted up or down vertically, by `means of the two` adjustingscrews, gg, which have their bearings upon `oii'sets g g', at the upperends of thesaid standards. l I also employ two steadying screws hh, foreach guide, E, which are tapped through it, so `that when, these guides1 and their sliding-plate D, have been properly adjusted and levelled,the bottom ends ofthe screws, lili, are; brought to bear uponthebed-plate, A, thus fixing the sliding-plate guides in the desiredposition, The verticali l tenons; iz', on the standards, B B, enteringcorresponding grooves in the guides, E E,` prevent the latter from 1`tilting and allow them to be adjusted up or down ina horizontal plane.The rod or`shaft,"3, figs.` 2'and 3,whichj p is to be straightened isintroduced between the bed-plate A, and its slide, D, when the latter`has been `drawnf t back to the position shown in fig. 2 previously towhich the space between the two plates'Aand D,,should beregulatedyaccording to the diameter of the rod or shaft, which it isdesired to straighten, by means of `the;` adjus` g re g h; the shaft Cisfthen rotated so as to reciprocate the slide D, and thusroll` theshaft a about; i i

l lthe bed-plate. p j 1 lof straightening the rods or shafts isconducted while they are h'ot, consequently theyare; 1p y p lindrical,and when they have cooled they have no tendency to spring orbuckle.` K pg hu described my inventiornwhat I claim as new, and desire to secure byLettersflatent, 15+

niblnation of a reciprocating slide D, which is vertically adjustable,with the bed-plate A, forthe ghtening rods or shafts, substantially asdescribed. i ng the ends of the slide D, by means of` guides E E, havingadjusting screws gg,`\a fed to them substantially asand for the purposesdescribed.

nd steadying j ROBERT sArEnY.

